Project F would have been equipped with a Wankel rotary engine and as part of the test rťgime for that engine, a couple of hundred hydropneumatically
suspended coupes were built for testing by a selected number of high
mileage motorists. The M35 was also a test bed for the hydraulics
employed in Projet F and later in Project G.
Unlike many prototypes, the M35 was available for all and sundry to
view. The Wankel engine was used in twin rotor form, in the Birotor and was intended, in trirotor form, to power the CX.
The body was constructed by Heuliez and apart from the front wings, shared no components with the Ami 8 which it resembled.
M35 was powered by a 49 bhp engine with a displacement of 497,5 cm3
(equivalent to 995 cm3) and was a 6CV under French tax rules. It had a
top speed of 144 kph and was sold for FF14,000 - almost the price of an
ID19 and more than double that of a 2CV.